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OpenStudy (anonymous):
What is the mass, in grams, of a sample of 7.83 × 1024 atoms of helium (He)? Please show me how to do it..
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OpenStudy (aaronq):
you need to steps, find the moles .. moles = atoms given/avogadros number then use, moles=mass/molarmass, to find the mass the molar mass is given in any periodic table, plug in what you know then solve for what you don't using algebra
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